Ever since stumbling over Cyrill Künzi’s article about the Sonicare brush head timer reset (which I’ve written about here), I’ve wondered what else is stored in the data. This is what a dump of the Mifare Ultralight NTAG213‘s memory from a white Sonicare A3 Premium All-in-One head looks like: The memory is organised into “pages”… Read More: Sonicare Brush Head NFC Data »
I’ve barely touched my Switch and was running some old Atmosphère version and Firmware 19-something. As someone not that deep in that topic anymore, here are the steps I’ve needed to get it updated to FW 21 – ready for the latest and greatest games. (Mostly for my own reference in the future.) Atmosphère The… Read More: Getting Atmosphère Ready for FW 21.0.0 »
Back in June 2020, The Outer Worlds was released for the Nintendo Switch. In September 2021, I’ve bought it and played it every once in a while until I finished it sometime in the middle of 2022. Despite also owning the Expansion Pass, I’ve never completed the additional quests. Since March 2025, I’m the proud… Read More: The Outer Worlds from Switch to Deck »
A while ago, I’ve bought the ISDT C4 EVO USB-C-powered battery charger to replace my MAHA C9000 (of which there seems to be a new “Pro” model available). The ISDT charger gets regular firmware updates which add new features and optimises the charging modes for different battery chemistries. Up until firmware 1.0.44, everything worked fine.… Read More: ISDT C4 EVO battery charger firmware downgrade »
After adding a new penguin to my zoo and moving around a few services, I had the need to re-route HTTPS traffic to a different host for doing all the SSL handling (which would then send a request back – but via HTTP on a different port). The simplest way to do this is to… Read More: Simple port forwarding using nftables »
I’m a data hoarder. And as such I still have email conversations going back to 2003. To not clog up my provider’s disk space and, because I don’t want to donate all these old conversations to Google, I’ve setup my own email archive using dovecot. Early versions ran natively on one of my Raspberry Pis,… Read More: Traefik as a TLS proxy for IMAPS »
Back when I bought my Nintendo Switch, I made sure to buy an unpatched one – turning all the different boxes in the store upside down to read the serial number on the bottom and compare it with the list I had on my phone. However, apart from some experiments with SX OS and later… Read More: Making your Nintendo Switch seaworthy »
Modern heads for Sonicare toothbrushes come with a small chip that records not only the type of head, but also how many seconds you’ve used it – so the head unit can remind you that it’s time to swap the head for a new one. This isn’t purely for monetary reasons, especially as the unit… Read More: Resetting your Sonicare brush head »
Google introduced its location tracking service Latitude in February 2009. A year later, in March 2010, I bought my first Android phone: the Google Nexus One. A few days later I’ve enable Google Latitude on it and my first checkin was on 31 March 2010 at 16:20:48 CEST. And apart from when I was without… Read More: Tracing My Steps – Logging Where I’ve Been »
A while ago I was fed up with Android Wear smartwatches and bought a Garmin Fenix 5 Plus. After using it for a while I started to explore the possibilities beyond the manufacturer specifications. This lead to a firmware patcher based upon work from Alex Whiter (who sadly passed in 2019). That patcher modified the… Read More: Pimp my Garmin: Turning your Fenix 5 Plus into a… »